If you haven’t selected the test or main net it is only in the virtual machine. You can configure the network yourself in superblocks, like we do in the coinflip dapp videos. Don’t worry about messing up the network.

No I don’t think so. You can only work with your local files in superblocks and then deploy them. As a developer you usually don’t want to work directly with production files anyway. You should keep the developing files separate until they are ready to be deployed. Unless you have a specific reason of course.